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Make a White LED Torch Using a Buck Converter

From ON Semiconductor L.L.C.

Very popular in portable backlight applications, the white
LED finds more and more derivatives on adjacent market.
Its small package size and light efficient conversion
contribute to replace standard illumination solution. White
LED considerably improves their technologies in the last
years and where a DC-DC boost or buck-boost converter
was required for a given illumination, you can now place a
DC-DC buck converter.

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This section serves to highlight and summarize the gamut of key topology-related design issues that should be kept in mind when actually designing converters (or when appearing for a job interview!).

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